The sessions covered faceoffs, skating, positioning and other ‘tricks of the trade’.

From the NHL:

The officials will also honor two of their own at Tuesday’s game. Beau Belkowski and Cooper Holferty from Marquette, Michigan, will be recognized as the honorary officials for the game between the Carolina Hurricanes and the Buffalo Sabres.

The game will be officiated by referees Brian Pochmara and Steve Kozari with Scott Driscoll and Bryan Pancich on lines.